Key information relevant to the recruitment process for the
overall study, such as dates of the recruitment period and locations

Between January and December 2009, women from Johannesburg, South Africa and Lusaka, Zambia who had previously participated in the HPTN 039 (NCT00076232) study, as well as other women in the community who presented to the research clinics with genetic ulcer disease (GUD) during the recruitment period, were invited to participate in the study.

Pre-Assignment Details

Significant events and approaches for the overall study
following participant enrollment, but prior to group assignment

Explanation of how the number of participants for analysis was determined.
Includes whether analysis was per protocol, intention to treat, or another method.
Also provides relevant details such as imputation technique, as appropriate.